6 5 Applications ■ Non-contacting sensor technology ■ Neutral zone detection (automatic transmission) ■ Sensor can be placed outside of the 4 2 3 1 Features ■ Neutral gear position (manual gearbox ■ MR or HE technology ■ Electronic calibration ■ Linear and rotary options available R transmission) ■ Reverse light switch on/off ■ Park sensor on/off ■ Reverse camera aid on/off Gear Shift Neutral Reverse Gear Position Sensor Introduction For manual transmissions, the Bourns® Neutral Reverse Gear Position Sensor is used to determine the neutral gear position for stop/ start applications. The start/stop system shuts the engine down automatically when the vehicle comes to a stop. For a vehicle with a manual transmission, the engine will restart once the gear lever is placed in neutral and the clutch pedal has been released. A neutral position detection sensor is used in automatic transmissions only to prevent in-gear starting. An automatic transmission uses neutral gear detection as a safety function to disable the starter operation if the gear selection is not in either neutral or park mode. If the engine was allowed to start in any other gear, the car would immediately lurch forward once the engine started. On many vehicles, the reverse light function is integrated into the neutral position sensor; the same function is now also used for engaging park position sensors and/or the reverse camera. The Bourns® Neutral Reverse Gear Position Sensor can be configured with two independent signals that provide a clearly separate signal for the neutral and reverse detection function. The sensor may be placed internally in the gearbox or outside of the gearbox casing. 1D Rotary Sensor - Reverse Gear 1D Rotary Sensor - Gears #1 through #6 Vout/Vdd [%] Vout/Vdd [%] Diagnostic Band (High) Diagnostic Band (High) 100.0 100.0 90.0 Clamping High 80.0 Clamping High Clamping Low 15.0 20.0 Clamping Low Diagnostic Band (Low) Diagnostic Band (Low) Angle Total Angle Total Angle Output : Gear shift (Rotary) (Reverse gear) Angle MR MR 6 5 4 3 2 1 Output: Gear shift (Rotary) (Gears #1 to #6) 5 6 3 4 1 2 R R Gear shift Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. Gear shift Neutral Reverse Gear Position Sensor Typical Parameters Total Length .........................................................2 x MR + X mm Air Gap Magnet Sensor .....................................5 ~ 8 mm typical Operating Temperature.........................................-40 to +125 °C Protection Degree ............................................................... TBD* Linearity .................................................................... ± 2.0 % MR Resolution ................................................................ < 0.1 % MR Ratiometry Error ..................................................± 0.15 % Vdd** Temperature Drift ..............................................0.5 % Vdd typical Supply Voltage ............................................................ 5 ± 0.25 V Supply Current ............................................................... < 30 mA Output Modes ....................................................Analogue, PWM * Application Dependent ** Analogue mode only For higher temperature range or improved accuracy applications, please contact Bourns engineering. Europe: Bourns Sensors GmbH Robert-Bosch-Str. 14 D-82054 Sauerlach Phone: +49 (0) 8104 646-0 The Americas: Bourns, Inc. 1660 N. Opdyke Road, Ste. 200 Auburn Hills, MI 48326-2655 USA Phone: +1 248 926-4088 Asia: Bourns, Inc. 10F, No. 146, Sung Jiang Road Taipei, Taiwan, 104 PRC Phone: +886 2 2562-4117 www.bourns.com [email protected] 07/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.